10 months young
A 10 months young baby should be fun to play with.
He will giggle, laugh, and be happy when tickled. He will be huggable and interactive. He will look for a parent to hold him and kiss him. There is no need to worry about whether he is autistic or not unless he is a strange kid (fussy too often, screaming too often, pulls away when held, odd interests, weird motions, weird sounds, etc...).